Heidelberger Druckmaschinen Ag

Bernhard Mechler

Andreas Detmers

Heiner Pitz

Alexander Weber

Markus Moehringer

Rolf Spilger

Stefan Maier

Tobias Mueller

Matthias Noell

Helge Grandt

Alexander Matern

Andreas Schorpp

Martin Schnaiter

An apparatus for printing a curved surface of an object, for example a ball includes a stationary printing unit for printing the object, the printing unit including an inkjet print head producing a print on the object surface in an active region of the print head, a curing unit for curing the print, the curing unit including a radiant heater curing the print in an active region of the radiant heater, a movable holding unit for receiving the object in a receiving region, moving the object from the receiving region into the active region of the print head, moving the object in the active region of the print head during production of the print and moving the object into the active region of the curing unit, and a control unit for controlling the movements of the holding unit, the production of the print and the curing of the print.

Apparatus for printing a curved surface of an object

In a method for re-imaging a printing form that has been used for printing in a prior printing process a substrate of the printing form is cleaned globally of ink or varnish and the substrate is treated abrasively globally in order to erase a preceding printing image. The substrate to be imaged with a new printing image is treated locally in image regions with a pulsed laser beam and, in the process, a nanoscopic and hydrophobic surface structure is produced locally. The substrate is treated globally with a hydrophilicity intensifier, as a result of which the substrate becomes hydrophilic locally in the previously hydrophobic image regions. An apparatus has a corresponding erasing unit and an imaging unit with a femtosecond laser.

Method and apparatus for re-imaging a previously used printing form

A method and a device for eliminating peeled-off surface portions of an ink-repellent layer of an offset printing plate. With known plate-cylinder washing devices such peeled-off surface portions of an ink-repellent layer cannot be eliminated from the offset printing plate completely. The method and device according to the present invention enables the complete elimination of said peeled-off surface portions. Using the surface of non-woven fabric mounted on a shaft in spiral-like manner, the ink-repellent layer is brushed off without any fluid added. The method and device are used in connection with the direct imaging of offset printing plates in the dry-offset process.

Method and device for eliminating peeled-off surface portions of an

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Heidelberg, Germany

Bernhard Mechler